Warehouse-door.



No. sas-,ma Patented Dec. 4,1900. W.A A. CROSS. WAREHOUSE DUUR.`

(Appl catxon led Dec 26 1899 l. n r e h l S fw s M JV e d h S 2 fide uza7 @fw @wd/Mw o-Lmw, wssmNsToN D c UNITED STATES PATENT OFFICE.

WILLIAM A. CROSS, OF CHICAGO, ILLINOIS.

wAREHousE-oooa.

SPECIFICATION forming part of Letters Patent No. 663,219, dated December4, 1900. Application filed December 26, 1899. Serial No. 741,519. kllomodel..l

To a/ZZ whom it may concern: y

Be it known that I, WILLIAM A. CRoss, a', citizen of the United States,residing at Chicago, in the county of Oook and State of Illinois, haveinvented certain new and useful' Improvements in Warehouse-Doors; and Ido -hereby declare the following to be a full,

clear, and exact description of the same, ref-Y erence being had to theaccompanying drawings, forming a part of this specification.

The present invention relates to hinged doors or gates forelevator-hatchways and for like uses.

The object of the present improvement is to provide a simple andefficient sectional and counterbalanced door for freight-elevatordoorways and analogous uses adapted to be hinged at its top to thedoor-frame and capable of easy and convenient manipulation to open andclose the dooway to which it is applied, all as will hereinafter morefully, appear and be more particularly pointed out in the claims. Iattain such objects by the construction and arrangement of partsillustrated in the accompanying drawings, in which- Figure l is aperspective view of the present sectional door, its closed positionbeing shown in full lines and its open position in dotted lines; Fig. 2,a vertical transverse section of the door and doorway, illustrating thedoor in a closed position; Fig. 3, a similar View with the door in anopen or raised position; Fig. 4, a fragmentary front elevation of thedoor and connections; Fig. 5, an enlarged detail horizontal sectionthrough a loweI` corner of the door, illustrating the guide andguide-roller therefor; Fig. 6, a detail perspective view of a modifiedform of the hinge connection between the top of the door and door-frame.

Similar numerals of reference indicate like parts in the several views.

Referring to the drawings, l represents the wall of the building, 2 theopening or doorway therein, and 3 vertical guides or slideways at thesides of the doorway, which in my preferred construction, as illustratedin the drawings,are formed by sections of channel-iron.

In the present improvement the door comprises an upper and a lowersection 4: and 5,

,hinged together in any suitable manner at ltheir meeting edges, andthedoor as a whole lis in turn.. hinged at top to the wall or doorframe byany ordinary hinge mechanism, either by butt-hinges, as shown in Figs.l, 2, 3, and 4, or by a rod-shaped pintle, as illusltrated in Fi'g. 6.

6 indicates combined guide and pivot blocks connected to the lower endsof the lower section 5 of the door by means of pivot-piutles 7. In thepresent construction the blocks 6 are adapted to move in the verticalguidegrooves of the stationary guides 2 and con- Iine the extreme lowerend of the door to a movement in a vertical plane.

8 indicates counterbalance cords or chains secured at one end to theguideblocks 6 or to the pintle-pins 7, as may be found most oon-Yve'nient, and arranged to pass over elevated pulleys 9, their otherends being connected to the counterbalance-weights 10. By means of thisconstruction the weight of the door is counterbalanced and the operationof the door to an open or closed position rendered both easy andconvenient.

When desired, the counterbalance-weights vl0 Vmay be housed in verticalwells 1l, as shown by dotted lines in Fig. 5, and arranged in paralleland adjacent relation with the vertical guides 2. Such provision may bedispensed with in ordinary warehouse constructions.

l2 and 13 are handles or hasps secured to the lower section 5 of thedoor to afford convenient means for manipulating the door to a closed oropen position.

14 is a transverse closing-strip secured across the seam between theupper and lower door-sections 4 and 5 for the purpose of affording aclosed joint at such seam.

In the operation of the present invention to effect an opening of thedoor the operator wiil pull upon the upper hasp l2 to draw the centralpart of the door toward him, after which, by means of both upper andlower hasps, the door-sections can be moved into the open positionillustrated in Fig. 3, the counterbalance-weights l0 aiding materiallyin the easy performance of the operation. In effecting a closure of thedoor a reversal of the abovedescribed operations is performed, theoperator drawing down the lower IOO end of the door by means of thelower hasp lhand finally adjusting the door-sections to. thefpositionillustrated in Fig. 2 by both hasps.

Having thus fully described my said inven- 5 tion, what I claim as new,and desire to secure by Letters Patent, is

1. The oombinationof a door frame or way, vertical slideways at the sideof the same, a door hinged at top to the door-framel and 1o formed byupper and lower sections of substantially equal size hinged together,guides for engaging the lower ends of the lower doorseetion with theslideways, and means for counterbalanoing lthe weight of the door, sub-I5 .stantially as set forth.

2. The combination ofadoor frame or Way, sections of channel-ironsecured to the sides of the same and constituting slideways, a doorhinged at top to the door-frame and 2o formed by upper and lowersections of substantially equal. size hinged together, andkguide-pintles on the lower end of the lower door-section engaging in thevertical grooves of the slideways, substantially' as set forth.

3. The combination of a door frame or way, r

ing over elevated pulleys and Connected at one end to aoounterbalance-weight and at the other to the lower end of the lowerdoorsection, substantially as set forth.

Signed by me at Chicago, Illinois, this 21st day of December, 1899.

WILLIAM A. CROSS.

Witnesses:

ROBERT BURNS, JOHN ENDERS, J r.

